Abstract
The microorganisms on the surface of the brown algaAscophyllum nodosum, collected from an intertidal area in Nahant, Massachusetts, were examined using scanning electron microscopy. Differences in the microbial populations on the holdfast, internodal regions of the stipe, and the apical tips were apparent. The populations ranged from a lawn of end-attached bacteria above the holdfast to microcolonies of yeast cells near the apical tips. The greatest diversity of microorganisms was noted in the internodal region representing the fourth year of growth where a dense lawn of end-attached bacteria was overlaid by filamentous bacteria, pennate diatoms, and filamentous blue-green algae. A simple procedure was developed to estimate the number of bacteria on the surface of the seaweed using the scanning electron microscope. The observed distribution of epiphytes may be explained in terms of the age of the algal surface, differences in light intensity, and the differential secretion of tannin by various parts ofAscophyllum.
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Bell, W. and R. Mitchell: Chemotactic and growth responses of marine bacteria to algal extracellular products.Biol. Bull. 143 (1972). 265–277.
Brock, R. D.: The habitat ofLeucothrix mucor, a widespread marine microorganism,Limnol. Oceanogr. 11 (1966), 303–307.
Chan, E. C. S. and E. A. McManus: Distribution, characterization and nutrition of marine microorganisms from the algaePolysiphonia lanosa andAscophyllum nodosum, Can. J. Microbiol. 15 (1962). 409–420.
Chet, I., P. Asketh and R. Mitchell: Repulsion of bacteria from marine surfaces,Appl. Microbiol. 30 (1975), 1043–1045.
Conover, J. T. and J. McN. Sieburth: Effect of sargassum distribution on its epibiota and antibacterial activity,Botan. Mar. 6 (1964), 147–157.
Cundell, A. M., M. C. Mueller and R. W. Traxler: Morphology and ultrastructure of a hydrocarbon-utilizingPencillium sp. grown on n-hexadecane or peptone,Appl. Environ. Microbiol. 31 (1976).
Draggan, S.: Improved specimen coating technique for scanning electron microscope observation of decomposer microorganisms,Appl. Environ. Microbiol. 31 (1976), 313–315.
Floodgate, G. D.:Primary fouling of bacteria, inMarine Borers, Fungi and Fouling Organisms of Wood. 117–123, E. B. Gareth Jones and S. K. Eltringham (eds.), OECD, Paris, 1971.
Fogg, G. E. and G. T. Baolch: Extracellular products in pure cultures of a brown alga,Nature 18 (1958), 789–790.
Graigie, J. S. and J. McLachlan: Excretion of coloured ultraviolet absorbing substances by marine algae.Can. J. Bot. 42 (1964), 23–33.
Hellebust, J. A.: Extracellular products. InAlgal Physiology and Biochemistry, 838–863, W. D. P. Stewart (ed.), University of California Press, Berkeley, 1974.
Laycock, R. A.: The detrital food chain based on seaweeds. I. Bacteria associated with the surface ofLaminaria fronds.Mar. Biol. 25 (1974), 223–231.
Lewin, R. A.: A classification of flexibacteria.J. Gen. Microbiol. 58 (1969), 189–206.
Marshall, K. C. and R. H. Cruickshank: Cell surface hydrophobicity and the orientation of certain bacteria of interfaces,Arch. Mikrobiol. 91 (1973), 29–40.
Marshall, K. C., R. Stout and R. Mitchell: Mechanism of the initial events in the sorption of marine bacteria to surfaces,J. Gen. Microbiol. 68 (1971), 337–348.
Moss, B.: Morphologensis. InAlgal Physiology and Biochemistry, 788–813, W. D. P. Stewart (ed.), University of California Press, Berkeley, 1974.
Poindexter, J. S.: Biological properties and classification of theCaulobacter group,Bacteriol. Rev. 28 (1964), 231–295.
Seshadri, R. and J. McN. Sieburth: Seaweeds as a reservoir ofCandida yeast in inshore waters,Mar. Biol. 30 (1975), 105–117.
Sieburth, J. McN.: The influence of algae antibiosis on the ecology of marine microorganisms. InAdvances in Microbiology of the Sea, 1. pp. 63–94, M. R. Droop and E. J. F. Wood (eds.), Academic Press, New York, 1968.
Sieburth, J. McN.: Studies on algal substances in the sea. III. The production of extracellular organic matter by littoral marine algae,J. Exp. Mar. Biol. Ecol. 3 (1969), 290–309.
Sieburth, J. McN., R. D. Brooks, R. V. Gessner. C. D. Thomas and J. L. Tootle: Microbial colonization of marine plant surfaces as observed by scanning electron microscopy. InEffect of the Ocean Environment on Microbial Activities, R. R. Colwell and R. Y. Morita (eds.), 418–432, University Park Press, Baltimore, 1974.
Sieburth, J. McN.:Microbial Seascapes, University Park Press, Baltimore, 1975.
Tosteson, T. R. and W. A. Corpe: Enhancement of adhesion of the marine algaChlorella vulgaris to glass,Can. J. Microbiol. 21 (1975), 1025–1031.
Wood, E. J. F.:Microbiology of Oceans and Estuaries, 206–225, Elsevier Publishing Co., Amsterdam, 1967.
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Cundell, A.M., Sleeter, T.D. & Mitchell, R. Microbial populations associated with the surface of the brown algaAscophyllum nodosum . Microb Ecol 4, 81–91 (1977). https://doi.org/10.1007/BF02010431
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DOI: https://doi.org/10.1007/BF02010431